The availability of an explicit statistical characterization of the output of a wireless channel,
impaired by additive and multiplicative random disturbance, is of paramount importance to
communication- and information-theoretic purposes. Indeed, a closed-form expression for the output
probability density function (pdf) is relevant for the evaluation of the ergodic mutual information
between the input and the output signals of a randomly faded channel [1]}.
It also turns out to be crucial in the finite block-length regime, in order to
characterize the information density of the communication at hand [2]}.
